On Mon, 12 Mar 2001, Andrew B. Lundgren wrote:
> They idea is that they will pump more oxygen into your exhaust allowing it
> to burn further in the catalytic converter. If you don't have the pump,
> then your exhaust may not burn as completely. It does take some HP to run
> the pump.
Then what was the air pump used for from 1969 to 1974 when the MG had no
catalytic convertor? My 73 18V has air pump holes (plugged, no air pump) and
no cat. The soon-to-start-any-day-now rebuild will be to 67 specs with no
emissions equipment at all.
-C
________________________________________________________________________
| Chris Thompson ct@cthompson.com |
| 1973 MGB http://cthompson.com/mg/ |
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